func (p *parser) takePragma() Pragma {
	prag := p.pragma
	p.pragma = nil
	return prag
}

// clearPragma is called at the end of a statement or
// other Go form that does NOT accept a pragma.
// It sends the pragma back to the pragma handler
// to be reported as unused.
func (p *parser) clearPragma() {
	if p.pragma != nil {
		p.pragh(p.pos(), p.scanner.blank, "", p.pragma)
		p.pragma = nil
	}

		p.To.Type = obj.TYPE_CONST
		p.To.Offset = -1

		pbahead := s.Prog(ppc64.ABEQ)
		pbahead.To.Type = obj.TYPE_BRANCH

		p = s.Prog(v.Op.Asm())
		p.From.Type = obj.TYPE_REG
		p.From.Reg = r1
		p.Reg = r0
		p.To.Type = obj.TYPE_REG
		p.To.Reg = r

		pbover := s.Prog(obj.AJMP)
		pbover.To.Type = obj.TYPE_BRANCH

		p = s.Prog(ppc64.ANEG)
		p.To.Type = obj.TYPE_REG
		p.To.Reg = r

		off := n - nbits // n > nbits because n > maxBits and nbits <= 7
		// Leading src fragment.
		src = subtractb(src, (off+7)/8)
		if frag := off & 7; frag != 0 {
			bits |= uintptr(*src) >> (8 - frag) << nbits
			src = add1(src)
			nbits += frag
			c -= frag
		}
		// Main loop: load one byte, write another.
		// The bits are rotating through the bit buffer.
		for i := c / 8; i > 0; i-- {

				prog = appendVarint(prog, elemWords-elemPtrs-1)
			}
		}
		// Repeat length-1 times.
		if elemWords < 0x80 {
			prog = append(prog, byte(elemWords|0x80))
		} else {
			prog = append(prog, 0x80)
			prog = appendVarint(prog, elemWords)
		}
		prog = appendVarint(prog, uintptr(length)-1)
		prog = append(prog, 0)
		*(*uint32)(unsafe.Pointer(&prog[0])) = uint32(len(prog) - 4)

	{"http:opaque?x=y#zzz", "https:/foo?a=b#frag", "https:/foo?a=b#frag"},
	{"http:opaque?x=y#zzz", "https:foo:bar", "https:foo:bar"},
	{"http:opaque?x=y#zzz", "https:bar/baz?a=b#frag", "https:bar/baz?a=b#frag"},
	{"http:opaque?x=y#zzz", "https://user@host:1234?a=b#frag", "https://user@host:1234?a=b#frag"},
	{"http:opaque?x=y#zzz", "?a=b#frag", "http:opaque?a=b#frag"},
}

func TestResolveReference(t *testing.T) {

func (c *ctxt0) isUnsafePoint(p *obj.Prog) bool {
	// If p explicitly uses REGTMP, it's unsafe to preempt, because the
	// preemption sequence clobbers REGTMP.
	return p.From.Reg == REGTMP || p.To.Reg == REGTMP || p.Reg == REGTMP
}

// isRestartable returns whether p is a multi-instruction sequence that,
// if preempted, can be restarted.
func (c *ctxt0) isRestartable(p *obj.Prog) bool {
	if c.isUnsafePoint(p) {

	hasGoroot := false
	for _, v := range tg.env {
		if strings.HasPrefix(v, "GOROOT=") {
			hasGoroot = true
			break
		}
	}
	prog := tg.goTool()
	if !hasGoroot {
		tg.setenv("GOROOT", testGOROOT)
	}

	tg.t.Logf("running testgo %v", args)
	cmd := testenv.Command(tg.t, prog, args...)
	tg.stdout.Reset()
	tg.stderr.Reset()
	cmd.Dir = tg.execDir
	cmd.Stdout = &tg.stdout
	cmd.Stderr = &tg.stderr

		}
	}

	uuidUpdated := false
	if combineDwarf {
		// Find "dsymutils" and "strip" tools using CC --print-prog-name.
		var cc []string
		cc = append(cc, ctxt.extld()...)
		cc = append(cc, hostlinkArchArgs(ctxt.Arch)...)
		cc = append(cc, "--print-prog-name", "dsymutil")
		out, err := exec.Command(cc[0], cc[1:]...).CombinedOutput()
		if err != nil {

type spanAllocType uint8

const (
	spanAllocHeap          spanAllocType = iota // heap span
	spanAllocStack                              // stack span
	spanAllocPtrScalarBits                      // unrolled GC prog bitmap span
	spanAllocWorkBuf                            // work buf span
)

// manual returns true if the span allocation is manually managed.
func (s spanAllocType) manual() bool {
	return s != spanAllocHeap
}

// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Annotate Ref in Prog with C types by parsing gcc debug output.
// Conversion of debug output to Go types.

package main

import (
	"bytes"
	"debug/dwarf"
	"debug/elf"
	"debug/macho"
	"debug/pe"
	"encoding/binary"
	"errors"
	"flag"
	"fmt"
	"go/ast"
	"go/parser"